function check(formObj){
	if(trim(formObj.email.value) == '' || !echeck(formObj.email.value)){
		alert('Please supply a valid contact email address.');
		return false;
	}
	if(trim(formObj.message.value) == ''){
		alert('Please supply a message.');
		return false;
	}
	return true;
}
function echeck(str){
	var email=/^[A-Za-z0-9]+([_\.-][A-Za-z0-9]+)*@[A-Za-z0-9]+([_\.-][A-Za-z0-9]+)*\.([A-Za-z]){2,4}$/i;
	return(email.test(str));
}
function chop(fieldObj, maxLen){
	len = fieldObj.value.length;
	if(len > maxLen){
		fieldObj.value = fieldObj.value.substring(0, maxLen);
	}
}
function trim(str){
	str = str.replace(/^\s+/g,'');
	return str.replace(/\s+$/g,'');
}